Moving some of all of your computing to the cloud is not a decision to be taken lightly, and requires a serious planning to determine what cloud model is best for the organization and which provider will offer the right level of security assurances.
This paper examines the relative merits of Software-as-a-Service and Infrastructure-as-a-Service, as well as issues and risks to consider. View now to determine whether these models are likely to provide better or worse security than your current in-house security.